Window structure



ay 10, 1966 J. F. STEEL WINDOW STRUCTURE 5 Sheets-Sheet 1 Filed Feb. 18, 1963 INVENTOR. c/bA/Af/TfiTEEL WW J W 245% flrraewss a May 10, 1966 J. F. STEEL WINDOW STRUCTURE 5 Sheets-Sheet 2 Filed Feb. 18, 1963 INVENTOR. aha/57554 BYW afia M #rraemaw May 10, 1966 J. F. STEEL WINDOW STRUCTURE 5 Sheets-Sheet 4 Filed Feb. 18, 1963 A TyIIIIII/A IIIII gaff-11 INVENTOR. c/Tu/A/ /4' 51-554 cfia, ma!

/47meA/zs May 10, 1966 .1. F. STEEL WINDOW STRUCTURE 5 Sheets-Sheet 5 Filed Feb. 18, 1963 jg' di INVEN TOR 3,250,038 WINDOW STRUCTURE John F. Steel, Palm Beach, Fla., assignor to Kota Products, Inc., Rocky Point, N.Y., a corporation of New York Filed Feb. 18, 1963, Ser. No. 258,982 2 Claims. (Cl. 49-341) This invention relates generally to windows, and more particularly to an improved window structure of the projected type possessing enhanced rigidity of support, simplicity and economy of structural arrangement, ease of operation and adjustment, and improved efficiency of closure sealing against moisture and draft-s.

Projected and awning type windows of the prior art commonly employ metal frames, typically fabricated of extruded aluminum elements. The window panes are generally held in clip elements, which are supported and operated by mechanisms located within the extrusions. A problem which has long confronted designers of such windows has been that of providing a simple and compact supporting and actuating structure of one size for windows of different sizes, and which is sturdy enough to hold any such window in either an open or a sealed (closed) position.

Attempts by the prior art to provide suitable support and actuating mechanisms for projected windows have heretofore proven inadequate, because such mechanisms have to be made too large, and hence too cumbersome, and too complex and expensive to accommodate large windows. These problems are further magnified where it is desired to operate a plurality of vertically aligned projected windows from a single operating mechanism.

An additional difficulty encountered with the windows of the prior art has been the problem of obtaining adequate sealing against moisture and drafts when the windows are brought to the closed position. Such windows are usually opened and closed by applying a direct operating force at only one end of the window pane. The rigidity of the glass is thus relied upon to cause the entire pane to move in and out. However, due to warping, op-

posite ends of the glass window pane are not generally parallel. Hence, it is commonly found that the end of the window pane, opposite that to which the direct operating force is applied, does not properly seat against the window seals when the window is closed.

A further disadvantage of the prior art windows has been the loss of effective sealing capabilities, with the passage of time, due to wear and flattening of conventional seals by virtue of sliding and prolonged contact with the clip elements holding the window pane. When such windows are closed, air and moisture may readily enter between the seals and the clip elements causing discomfort to persons and possible damage to furniture and other items in'the room.

Accordingly, it is an object of the present invention to orovide a new and improved window structure which overcomes the above and other disadvantages of the prior art.

Another object'is to provide a window structure embodying an improvedoperating mechanism characterized by enchanced rigidity of window pane support and ease of actuation to open and closed positions.

A further object of the invention is the provision of an improved window structure wherein a single compact operating mechanism can be used to actuate a plurality of vertically aligned projected windows of larger size than has heretofore been practical.

Still another object is to provide an improved window structure of the projected type in which the rate of closure of either side of the window pane is adjustable.

Yet another object of the present invention is the provision of an improved 'window structure providing enhanced sealing protection to prevent moisture and drafts fromentering the window in its closed position.

A still further object is to provide an improved projected window structure capable of supporting, actuating, and sealing large window panes in a simple and economical manner.

The above and other objects and advantages of this invention will be better understood by reference to the following detailed description when considered in connection with the accompanying drawings of illustrative embodiments thereof, wherein:

FIGURE 1 is a perspective view of a pair of horizontally adjacent projected windows of my invention, respective ones of which are shown in the open and closed positions;

FIGURE 2 is a sectional view, taken along the line 2-2 of FIGURE 1, and illustrates the operation of the supporting and actuating'linkages during opening and closing of the window;

FIGURE 2a is an enlarged fragmentary sectional view of the head seal element shown in FIGURE 2, and illustrates the operation of the seal when the window is in the closed position;

FIGURE 2b is an enlarged fragmentary sectional view similar to FIGURE 2a, but illustrates the shape of the head seal element when it is disengaged from the window pane;

FIGURE 3 is an enlarged fragmentary sectional view, taken along the line 3--3 of FIGURE 2, and illustrates the manner in which the window pane is hinged to a sliding shoe within the jamb of the window frame;

FIGURE 4 is a sectional view in elevation of one of the windows of FIGURE 1 as seen from the outside, showing the structural details of the operating mechanism within the frame;

FIGURE 5 is a fragmentary sectional view, taken along the line 55 of FIGURE 4, and shows the cooperative relation between the operating mechanism within the window frame and the supporting and actuating linkages carrying the window pane;

FIGURE 6 is an enlarged fragmentary sectional view, taken along the line 6-6 of FIGURE 4, and shows how the operator mechanism is secured to the window frame, as well as showing the connection of the vent arm linkage to a pivot block within the jamb;

FIGURE 7 is an enlarged fragmentary sectional view, taken along the line 7-7 of FIGURE 4, and shows how the roller housing for the cable system of the window is secured within the jamb of the window frame;

FIGURE 8 is an enlarged fragmentary sectional view, taken along the line 8-8 of FIGURE 4, showing how the cable lock is positioned for movement within the roller housing, and also showing the manner in which the actuating arm linkage is connected to the cable lock;

FIGURE 9 is an enlarged fragmentary sectional view, taken along the line 9 of FIGURE 1, showing the structure of the window pane clip element and the manner in which the vent arm linkage is secured to the clip;

FIGURES l0 and 11 are horizontal sectional views through the window structure of my present invention, to show the closing action of the window;

FIGURE 12 is an elevational view of an embodiment of the invention in which a pair of vertically adjacent projected windows are simultaneously operated by a single operator mechanism;

FIGURE 13 is a fragmentary elevational view of a pair of ganged operating bars for the window structure embodiment of FIGURE 12;

taken along the line 157-15 of FIGURE 14, and illustrates the manner in which the ganged operating bar of FIGURE 13 provides clearance for the hinge bracket shoe of the lower projected window and also provides for adjustment of the pivot point location for the actuating arm linkage of the upper window.

Referring now to the drawings, and particularly to FIGURE 1 thereof, there is shown a pair of projected windows 20, 21 horizontally adjacent one another and set in the outside wall 22 of a building. Each of the windows 20, 21 includes a glass pane 23 held at its ends by side clip elements 24, and at the top and bottom by similar clips 25. The clips 24, 25 are preferably fabricated of suitable metal extrusions, such as aluminum, steel, 'or the like, and mate with one another at each corner 26 to provide a strong, rigid-border completely enclosing the peripheral edges of the window pane 23. Each of the windows 20, 21 also includes a window frame 30 comprising a pair of jamb elements 27, a head element 28, and a sill element 29. The head, sill and jamb portions of the window frame 30 are all formed of a suitable metal, such as extruded aluminum or the like. In addition, the head, sill and jamb elements preferably embody a common frame design of the type set forth in co-pending application Serial No. 750,470, filed July 23, 1958, for window and now Patent No. 3,040,850.

In the closed position shown in FIGURE 1 for the window 21, the jambv elements 27 of the window frame 30 house a plurality of linkage elements, in cooperation with a pair of actuating arm brackets 31 mounted upon the side clips 24, for supporting and actuating the window 21 to the open position shown for the window 20. These supporting and actuating linkages include a pair of vent arms 32 and a pair of actuating arms 33.

FIGURES 2 and 3 more clearly indicate the structure for moving the pane 23 to the open and closed positions. As the pane 23 moves from the closed position to the open position (shown in phantom in FIGURE 2), the top portion of the pane moves downward bettween the jambs 27, while the bottom portion of the pane moves up and out with respect to the frame 30.

To, accomplish this path of motion, one end of the actuating arm 33 is pivotally connected at 34 within the actuating arm bracket 31 mounted upon the clip 24 of the window pane 23. The other end of the actuating arm 33 is pivotally connected at 35 and is constrained solely tovertical motion along the jamb 27 by means which will be hereinafter described in detail. One end of the vent arm 32 is pivotally secured at 36 to the clip 24 whereas the other end of the vent arm is secured to and pivots about a fixed point 37.

A hinge bracket 38 is fixed at one end to the underside of the side clip 24, the other end of the hinge bracket being pivotally connected at 39 to a sliding shoe'41, of nylon or the like. The hinge bracket 38 is secured to the shoe 41 by means of a bolt 42. The shoe 41 is adapted for sliding engagement within the jamb 27 and thereby constrains the pivot point 39 solely to vertical motion along the jamb. The shoe 41 also includes a U-shaped portion 43 providing a clearance channel for bolts or other fastening devices 44 which may be used to fasten the jambs 27 to the building wall 22.

It will be apparent from FIGURE 2, therefore, that the pane 23 is supported for rotation about the three pivot points 35, 37, 39. Hence, the tendency towards instability of the pane 23 about a single pivot point is minimized. Moreover, the utilization of three supporting elements at each side of the window, namely the actuating arm 33, the vent arm 32, and the hinge bracket 38, provides a structural arrangement of great strength and rigidity for supporting the pane 23 in the open position. Such a structural arrangement is adaptable for support and actuation of quite large panes of glass.

The manner in which improved sealing of the projected window 20 between the head element 28 of the window frame 30 and the clip element 25 of the pane 23 is accomplished will be apparent from FIGURES 2a and 2b.

FIGURE 2b shows a .portion of the head 28 upon which a novel weather strip seal 50, of vinyl plastic or the like, is mounted. The head 28 includes a pair of opposed flanges 51 for engaging a corresponding lip portion 52 of the seal 50. The seal 50 includes a flexible tubular sleeve having an upper wall 53, a lower wall 54, and a lateral groove 57 located therebetween. The seal 50 also includes a depending flap portion 55 which extends downwardly from the outermost portion of the tubular sleeve and also extends outwardly of the sleeve when the seal is in an uncompressed state. The inner surface of the lower portion of the flap 55 also carries a projection or nib 56 which is coextensive with the full length of the seal and flap.

The operation of the seal 50 when the window is closed is apparent from FIGURE 2a. As the window closes, the top clip element 25 engages the lower wall 54 of the seal 50 and moves the lower wall upwards with respect to the wall 53 abutting the head element 28. The over-all compressive stress upon the seal 50 is substantially absorbed by closure of the lateral groove 57 as the lower wall 54 moves upwards with respect to the seal wall 53. In this manner, the tendency of the walls 53 and 54 of the seal 50 to take a permanent set due to prolonged compressive contact with the upper clip element 25 is substantially reduced.

Moreover, upward movement of the lower Wall 54 causes clockwise angular movement of the depending flap 55 about the junction of the lower wall with the upper Wall 53 of the seal 50. Such angular movement of the flap 55 brings the nib 56-into sealing engagement with the upper portion of the clip element 25.

Hence, the novel structure of the seal element 50 not only minimizes the potential failure of effective seal between the lower wall 54 and the clip 25 by virtue of the lateral groove 57, but also accomplishes additional sealing by virtue of the flap 55. Moreover, it will be noted from a comparison of FIGURES 2a and 2b that the outward inclination of the flap 55, when the seal 50 is in the uncompressed state, enables the clip 25 to engage the lower wall 54 during the closure process with a minimum possibility of snagging the flap 55 between the clip and the lower wall of the seal. The flap 55 moves inward to engage the upper clip element 25 only subsequent to engagement of the lower wall 54 by the clip.

Referring now to FIGURES 4-8, the structural details of the apparatus for securing and controlling the operation of the various linkages which support and actuate the window of the present invention will become apparent.

Each of the jambs 27 of the window frame 30 carries an operating bar 60 adapted for vertical movement along the jamb. The raising and lowering of the operating bar 60 controls the opening and closing action of the window in a manner which will be subsequently described.

The vertical movement of the operating bar 60 along the jamb 27 is effected by a manual operator or crank element 61 which is adjacent the jamb at only one side of the window frame 30. To this end, the operating bar 60 is provided with a toothed rack section 62, the teeth of which are in engagement with a worm gear 63 disposed within an operator housing 64 from which the operator 61 extends. The inner end of the operator 61 carries a worm drive element 65 which is adapted to turn the worm gear 63 and thereby impart vertical movement to the operating bar 60.

The operator 61 and operator housing 64 are fixedly secured to the window frame 30 at the back of the jamb 27 (see FIGURES 4 and 6). In this regard, the rear wall of the jamb 27 and a base plate portion 66 of the operator housing 64 are provided with matching holes to receive a plurality of attaching bolts 69. To further enhance the rigidity of the connection between the base plate 66 and the jamb 27, an operator mounting bracket 67 is positioned within the jamb and secured to one side wall of the jamb by any suitable fastening means 70. The operator bracket 67 carries a plurality of legs 68 which embody threaded apertures to receive the ends of the attaching bolts 69.

Carried within each of the jambs 27 of the window frame 30 is a vent arm pivot block 71 which is secured to one side of the jamb by means of a plurality of attaching bolts 73. The base portion of the pivot block 71 through which the attachment bolts 73 pass embodies an adjustment strap 72. The adjustment strap 72 is provided with a plurality of elongated slots 74, one for each of the attachment bolts 73, to enable a limited degree of vertical adjustment for positioning the pivot block 71, and hence the vent arm pivot point 37, along the jamb 27.

The vent arm 32 is pivotally connected to the pivot block 71 by means of a bolt 75 which passes through the vent arm, a clearance channel 76 in the operating bar 60, andlfinto an appropriately threaded hole in the pivot block itse The pivot block 71 is also provided with a suitable slot 77 to provide clearance for the operator housing attachment bolt 69 which passes through the pivot block to engage the operator bracket 67. The elongated clearance slot 77 in the vent arm pivot block 71 enables the vertical adjustment of the pivot block to be accomplished without interfering with the passage of the bolt 69. Moreover,

' the clearance slot 76 in the operating bar 60 enables the operating bar to move vertically along the jamb 27 with-out interference from the vent arm attaching bolt 75 which passes through the operating bar.

The base of the operating bar 60 is secured by any suitable attachment means, such as the screw 82, to a cable lock 81, the operation of which will be subsequently described. The cable lock 81 also serves as an actuating arm pivot block. To this 'end, the actuating arm 33' is pivotally connected to the cable lock 81 by a bolt 83 which also passes through the lOlWCI' portion of the operating bar 60. Hence, the cable lock 81 and actuating arm 33 move with the operating bar 60 in its vertical travel along the jamb 27.

As previously indicated, vertical movement is imparted to the operating bar 60 at only one side of the window frame 30 by cranking the operator 61. This vertical movement of one of the operating bars 60 must be transmitted to and synchronized with the other operating bar adjacent the jamb on the opposite side of the window frame. The latter is accomplished by a novel cable arrangement forming one aspect of the present invention.

A roller housing 85 is positioned within each of the jambs 27 below the pivot block 71 and extending nearly to the base of the window frame 30. The roller housing 85 is secured to the back wall of the jamb 27 by the attachment bolts 87 and to the sidewall of the jamb .by the attachment bolts 86. To further enhance the rigidity of the roller housing 85, an angle bracket 88 is also positioned within the jamb 27 and secured thereto by any suitable fastening means 89. One surface of the angle bracket 88 abuts the roller housing 85 and is appropriately threaded to receive the ends of the attaching bolts 87.

Mounted within the upper portion of each of the roller housing 85 is a pulley wheel or roller 88, the axis of which is in vertical alignment with the axes of a pair of similar rollers 89, 90,mounted for rotation within the lotwer portion of each of the roller housings.

A single cable 91, of steel or the like, is threade around the roller 88 of one roller housing, down to and around the roller 90 of that housing, and to and about the roller 90 of the opposite roller housing. From this point of the roller 90, the cable 91 is directed up, across and around the roller 88 of the second housing, down and around the roller 89 of the second housing, back to and around the roller 89 of the first roller housing, and up and across to the first roller 88 (the starting point). This manner of threading the cable 91 over the rollers 88-90 of each of the roller housing 85 insures that the portions of the cable nearest the operating bars 60 on both sides of the window frame 30 will always move in the same direction.

Once the cable 91 has been threaded in the aforedescribed manner, and suflicient tension is applied to the cable, the ends of the cable may be secured by any suitable means, such as the end clamps 92.

In each of the jambs 27, the portion of the cable 91 nearest the operating bar 60 is passed through a locking channel 93, formed in the upper portion of the cable lock 81, and is thereafter directed through a cable clearance slot. 94 which extends the remaining length of the cable lock through the rear wall of the lock. The cable .91 is secured within the locking channel 93 of the cable lock 81 by a set screw 95 extending through the front wall of the cable lock to pinch'the cable at 96. Access to the set screw 95 through the operating bar 60 is facilitated by an aperture 97 extending through the operating bar to expose the head of the set screw.

The cable arrangement in the window structure of the present invention enables independent adjustment of the location of the actuator arm pivot joint 35 for each side of the window frame 30. In this manner, the rate with which each side of the pane 23 closes may be separately controlled for each side of the window. The significance of this closure rate adjustment capability, as well as the manner in which the window of the present invention is adjusted, will be apparent from FIGURES 1'0 and 11 taken in conjunction with FIGURES 4 and 5.

As previously indicated, a primary problem encountered with the projected windows of the prior art, and especially large windows, has been the difiiculty in obtaining proper seating for the side of the pane opposite that to which the direct operating force is applied. The window of the present invention overcomes the latter difliculty by causing the window to close more rapidly at the side opposite the operator 61 than at the side adjacent the operator. This is the condition illustrated in FIGURE 10.

Hence, continued cranking of the operator 61 will close the side of the window adjacent the operator, as shown in FIGURE 11, and will also simultaneously torque the glass pane 23. In view of this torquing stress introduced into the window pane 23 when the window is closed, the side of the window opposite the operator 61 is firmly seated against the window frame. Hence, the pane torquing approach, embodied by the window structure of the present invention, provides a biasing force which accomplishes much more positive and uniform seating of the window than has been obtainable with the window structures heretofore available.

The manner in which the window of the present invention is adjusted to perform in the manner illustrated in FIGURES 10 and 11 is best understood by reference to FIGURES 1, 2, 4 and 5.

The first step in adjusting the window 20 of FIGURE 1 is to properly align the pane 23 so that the top clip element 25 will properly engage the upper seal 50 of the head element 28 when the window is closed. accomplish this, the clip element 25 is substantially parallel to the head element 28 and is also sufficiently close to the head element, when the window is closed, to insure adequate compression of the seal 50. The latter requirements are readily satisfied by the vertical adjust- In order to 7 ment afforded both sides of the window by the adjustment straps 72 of the vent arm pivot blocks 71. In this regard, the attachment bolts 73 are loosened and, after placing the clip element 25 in the properly aligned position, the attachment bolts are tightened.

The second step in adjusting the window is to cause the side of the window opposite the operator 61 to contact the window frame 30, during closing, prior to contact of the window frame by the side of the window adjacent the operator. This is accomplished by first opening and closing the window to ascertain which side of the window is closing more rapidly. If the side of the window adjacent the operator 61 contacts the window frame first, then the set screw 95 of the cable lock 81 for the jamb furthest from the operator is loosened. The latter cable lock is then moved to a lower position within the-jamb before retightening the set screw. The new position of the cable lock 81 will be that which is necessary to cause the side of the window opposite the operator 61 to contact the window frame during closing just prior to contact of the window frame by the side of the window adjacent the operator. Alternatively, the cable lock in the jamb adjacent the operator 61 can be moved upward to a new position within the roller housing 85 andthereby accomplish the same results.

The aforedescribed adjustment procedures result in a lower actuating arm pivot point 35 for the side of the window opposite the operator 61. This, in turn, causes the actuator arm 33 for the latter side of the window to retract inwardly at a slightly greater velocity than the actuator arm nearest the operator 61 whose pivot point is higher.

Referring now to FIGURE 9, the manner in which the pane 23 is held within the clip elements, such as the clip 24, will be apparent. The ends of the pane 23 are held by glaze beads 100, of rubber, plastic or the like.

Each glaze bead 100 is gripped by appropriately shaped cradle portions 101, 102 of the clip 24. This glaze bead arrangement prevents the pane 23 from making contact with any metal structure of the clip element and thereby minimizes the possibility of glass breakage from this cause. Additional strength and rigidity is provided for each of the clip elements by means of the walls 103, 104, 105 which extend across the width of the clip element to brace the outer walls against inward compression, i.e., such asthose encountered when the window is closed, and thereby prevents distortion of the clip element. 1

In the case of the side clip element 24, the inner wall of the element is cut away between the bracing walls 104, 105 to permit entry of the vent arm 32. In this connection, the walls 103, 104, 105 and the vent arm 32 embody matching holes which are threaded to receive an attaching bolt 105 therethrough for pivotally connecting the vent arm 32 to the clip element 24.

The outer end of the clip element carries a pair of inwardly extending opposed flanges 106 for engaging a corresponding lip portion 108 of a seal element 107. This type of seal element is utilized to enhance effective sealing between the window in its closed position and the sill and jamb elements. The manner in which this improved sealing is accomplished is best observed in FIG- URES l and 11.

The seal 107 possesses a thickened end portion 109 adapted for compressive wedgin-g between the clip element 24 and the jamb 27 as the window is closed. However, the thickened portion 109 of the seal 107 also carries a perpendicular flap 110 which contacts and assumes the contour of the outer portion of the jamb 27 when the window is closed. Hence, the seal 107 is doubly effective in providing both a direct compressive seal between the window and the window frame as well as a wipertype deflector to further shield against the entry of moisture and drafts.

The structure and cooperative action illustrated in FIGURES 10 and 11 for sealing between the jamb 27 and the clip element 24 is duplicated in structure and cooperation for the sealing effected between the window pane clip element 25 and the sill element 29 of the window frame 30.

To further enhance the sealing action between the window and the jamb and sill elements of the window frame 30, a plurality of woven pile strips 111 are provided in channels along the full length of the jamb and sill elements. These strips 111 engage the rear wall portions of the clip elements 24, 25 when the window is closed.

The supporting and actuating arrangement described for the window 20 of FIGURE 1 is equally applicable to simultaneous operation from a single operator mechanism of a plurality of vertically aligned projected windows, such as the projected windows 120, 121 set in the building wall 122 as shown in FIGURE 12.

Such multiple window operation is accomplished by ganging the operating bar 160 of the lower window with an operating bar 160' of the upper window 121, substantially as shown in FIGURE 13. The ganging of the operating bars 160 and 160 is accomplished by dovetailing the lower operating bar with the upper operating bar at 161 to prevent relative movement between the two operating bars inany direction within the plane of the operating bars. To prevent relative movement of the operating bars 160, 160 in a plane perpendicular to the plane of the operating bars, the dovetail boundary between the two operating bars is apertured and threaded for receipt of a screw 162.

Referring to FIGURES 13-15, the cooperation between the operating bar 160, the vent arm 132, and the actuating arm 133 for the window 120 is observed to be essentially the same as for the window 20 of FIGURE 1. However, no cable arrangement is provided for upper projected windows suchas the window 121 in FIGURE 14. Moreover, since the window 121 is operated and controlled by ganging the upper operating bar 160' to the lower operating bar 160, suitable clearance must be provided for the sliding hinge bracket shoe 141 which would normally interfere with the movement of the upper operating bar.

To this latter end, the upper operating bar 160' em bodies a slot 163 to provide clearance for the bolt 142 which connects the hinge bracket 138 to the shoe 141. Furthermore, a spacer element encircles the bolt 142 between the shoe 141 and the hinge bracket 138 to maintain the shoe in a position behind the operating bar In this regard, the connection between the hinge bracket 138 and the shoe 141' of the upper window 121 is an exact duplicate of the arrangement for connecting the hinge bracket 38 to the shoe 41 of the window 20 as shown in FIGURE 4.

Moreover, the manner in which the vent arm 132' is pivotally connected to the jamb 127 duplicates the manner of connection for the single projected window 20. However, since no cable arrangement or cable locks 81 are provided for the upper window 121, a different method of pivotal connection for the actuating arm 133 is employed. To this end, the operating bar 160' is provided with the elongated slots to receive a plurality of at tachment bolts 182 which extend therethrough to engage and secure an attachment plate 181. Similarly, a mounting bolt 183 is passed through the actuating arm 133, one of the slots 180, and is secured to the attachment plate 181 to pivotally connect the actuating arm to the upper operating bar 160'.

By virtue of the elongation of the slots 180, loosening of the bolts 182, 183 allows a limited degree of vertical adjustment. The manner of adjustment for the upper window 121 of FIGURE 14 duplicates that for the windows 20, 21 of FIGURE 1 with the exception that the attachment plate 181, instead of the cable lock 81, is moved up or down to vary Window closure rate.

The window structure of the present invention satisfies a long existing need in the window field for a simple and economical structural arrangement endowed with sulficient rigidity of support and ease of manual operation for projected windows embodying window panes much larger than those heretofore used. Moreover, the present invention also overcomes the difliculty in sealing against moisture and drafts which have so long plagued designers of such windows.

It will be apparent from the foregoing that, while particular forms of my invention have been illustrated and described, various modifications can be made without departing from the spirit and scope of my invention. Accordingly, I do not intend that my invention be limited, except as by the appended claims.

I claim:

1. A window structure of the projected type comprismg:

a window frame including head and sill elements and a pair' of jamb elements;

a window pane held within a plurality of clip elements and adapted for relative movement with respect to said window frame;

a sliding shoe within the upper portion of each of said jamb elements;

a hinge bracket pivotally connected to each of said shoes and secured to said clip elements;

a pivot block secured within each of said jamb elements;

a vent arm pivotally connected to each of said pivot blocks and to said clip elements;

an elongated operating bar adjacent to each jamb element and adapted for vertical movement along said jamb elements;

an actuating arm pivotally connected to the base of each operating bar and to said clip elements;

a single cable system housed within said. sill element and both of said jamb elements;

. 10 a cable lock within each of said jamb elements secured to the cable of said cable system and to the operating bar adjacent the respective jamb element, the position of each of said cable locks along said cab'le being adjustable; and operator means located adjacent only one jamb element to impart vertical movement to the operating bar adjacent said one jamb element, whereby vertical movement is also imparted through said cable system and said cable locks to the operating bar adjacent the other of said jamb elements. 2. A window structure as set forth in claim 1 wherein the vertical position of the pivot block within each of said jamb elements is adjustable.

References Cited by the Examiner UNITED STATES PATENTS 1,508,624 9/1924 Soule 20-42 2,103,864 12/ 1937 Moseley 20-42 2, 158,714 5/ 1939 Wiley 20-42 2,263,806 11/ 1941 Hammerl 20-69 2,620,523 12/1952 Broleman 20-42 2,644,557 7/ 1953 Westman 20-42 2,688,779 9/ 1954 Westman 20-42 2,740,170 4/ 1956 Westman 20-42 2,741,346 4/1956 Westman 20-42 2,829,744 4/ 1958 OBrien 20-42 2,901,065 8/ 1959 Hauck 20-42 2,905,981 9/1959 Brenner 20-42 2,916,782 12/1959 Dodge 20-42 2,935,771 5/1960 Hatcher 20-69v HARRISON R. MOSELEY, Primary Examiner. 

1. A WINDOW STRUCTURE OF THE PROJECTED TYPE COMPRISING: A WINDOW FRAME INCLUDING HEAD AND SILL ELEMENTS AND A PAIR OF JAMB ELEMENTS; A WINDOW PANE HELD WITHIN A PLURALITY OF CLIP ELEMENTS AND ADAPTED FOR RELATIVE MOVEMENT WITH REPSECT TO SAID WINDOW FRAME; A SLIDING SHOE WITHIN THE UPPER PORTION OF EACH OF SAID JAMB ELEMENTS; A HINGE BRACKET PIVOTALLY CONNECTED TO EACH OF SAID SHOES AND SECURED TO SAID CLIP ELEMENTS; A PIVOT BLOCK SECURED WITHIN EACH OF SAID JAMB ELEMENTS; A VENT ARM PIVOTALLY CONNECTED TO EACH OF SAID PIVOT BLOCKS ND TO SAID CLIP ELEMENTS; AN ELONGATED OPERATING BAR ADJACENT TO EACH JAMB ELEMENT AND ADAPTED FOR VERTICAL MOVEMENT ALONG SAID JAMB ELEMENTS; AN ACTUATING ARM PIVOTALLY CONNECTED TO THE BASE OF EACH OPERATING BAR AND TO SAID CLIP ELEMENTS; A SINGLE CABLE SYSTEM HOUSED WITHIN SAIDSILL ELEMENT AND BOTH OF SAID JAMB ELEMENTS; A CABLE LOCK WITHIN EACH OF SAID JAMB ELEMENTS SECURED TO THE CABLE OF SAID CABLE SYSTEM AND TO THE OPERATING BAR ADJACENT THE RESPECTIVE JAMB ELEMENT, THE POSITION OF EACH OF SAID CABLE LOCKS ALONG SAID CABLE BEING ADJUSTABLE; AND OPERATOR MEANS LOCATED ADJACENT ONLY ONE JAMB ELEMENT TO IMPART VERTICAL MOVEMENT TO THE OPERATING BAR ADJACENT SAID ONE JAMB ELEMENT, WHEREBY VERTICAL MOVEMENT IS ALSO IMPARTED THROUGH SAID CABLE SYSTEM AND SAID CABLE LOCKS TO THE OPERATING BAR ADJACENT THE OTHER OF SAID JAMB ELEMENTS. 